Patentable/Patents/US-10422312
US-10422312

Energy storage and generation system

PublishedSeptember 24, 2019
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

An energy storage and generation system uses a combination of compressed air energy storage systems and fluid energy systems, to store energy producing capability at a time when electricity requirements are low, to release that stored energy producing capability at a time when electricity requirements are high.

Patent Claims
7 claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

1. An energy storage and generation system for storing or producing electricity comprising: an energy storage mode and an energy generation mode; wherein in the energy storage mode the system uses electrical power to produce and store energy in the form of a compressed gas; wherein in the energy generation mode the system uses the compressed gas to produce electrical power; at least one external electrical power source to provide the electrical power for the system when the system is operating in the energy storage mode or when the system is in transition from the energy storage mode to the energy generation mode and wherein the at least one external electrical power source is also able to receive electrical power back from the energy storage and generation system when the energy storage and generation system is operating in the energy generation mode; at least one compressed gas producing device capable of taking in the electrical power to produce the compressed gas; at least two liquid vessels for holding or releasing a liquid during system operation; at least one reservoir for storing extra volumes of the liquid; at least one hydroturbine generator connected through a network of pipelines to the at least two liquid vessels and the at least one reservoir; an electrical integrating device controlled by a monitoring and control system and also connected electrically with the at least one external electrical power source, the at least one hydroturbine generator, the at least one compressed gas producing device and at least one electrical supply outlet; and at least one compressed gas vessel for storing the compressed gas and connected through the network of pipelines to the at least one compressed gas producing device and the at least two liquid vessels, wherein the energy storage and generation system, through the monitoring and control system is selectively switchable between the energy storage mode and the energy generation mode; at least one liquid pump controlled electrically by the monitoring and control system and connected by the network of pipelines to the reservoir and the at least two liquid vessels; at least one liquid level sensor connected electrically to send an input to the monitoring and control system to sense the level of the liquid in the at least two liquid vessels; at least one gas pressure sensor connected electrically to send an input to the monitoring and control system to sense the pressure of compressed gas inside the at least two liquid vessels and the at least one compressed gas vessel; at least one liquid valve to control the flow of the liquid in the network of pipelines, wherein the at least one liquid valve is controlled electrically by the monitoring and control system; at least one gas valve to control the flow of the gas in the network of pipelines, wherein the at least one gas valve is controlled electrically by the monitoring and control system; at least one venting device to vent gas from the at least two liquid vessels, wherein the at least one venting device is controlled electrically by the monitoring and control system; at least one compressed gas outlet connection along the network of pipelines connecting the at least one compressed gas vessel and the at least two liquid vessels, wherein the compressed gas outlet is able to allow the compressed gas to be passed from the energy storage and generation system to an external device; at least one electrical connection switch controlled by the monitoring and control system to direct the flow of electrical power in the system; wherein, when the system is operating in the energy storage mode at a first time, the liquid pump is energized by electrical power coming from the external electrical power source through the monitoring and control system and a portion of the liquid is transferred from the reservoir to at least one of the at least two liquid until an operational level is reached, the operational level being determined by the input sent from the at least one liquid sensor to the monitoring and control system; wherein the compressed gas is generated by electrical power flowing from the external electrical source through the integrating device to the compressed gas generating device until the pressure of the gas in the at least one compressed gas vessel reaches an operational value determined by the input sent from the at least one gas pressure sensor to the monitoring and control system; the energy storage and generation system then going into normal operation in the storage mode with the compressed gas being sent through the network of pipeline connection to the at least one liquid vessel that contains the liquid, the compressed gas pushing and replacing the liquid in the at least one liquid vessel containing liquid and sending the liquid through the at least one hydroturbine generator into a second empty liquid vessel of the at least two liquid vessel, a portion of the electrical power generated by the at least one hydroturbine generator is fed back through the integrating device to be combined with the electrical power coming from the external electrical power source and the combined electrical power being then used to continue powering the compressed gas generating device; and an energy producing capability is stored in the form of the compressed gas which replaces the liquid in the at least one liquid vessel containing liquid.

2

2. The energy storage and generation system of claim 1 further comprising: the compressed gas producing device being a reversible device capable of receiving electrical power fed from the at least one external electrical source through the integrating device to produce compressed gas or working in reverse mode to receive the compressed gas stored in the at least one compressed gas vessel or the at least one liquid vessel whose liquid was replaced with the compressed gas and the compressed gas flowing through the connecting network of pipelines back to the reversible compressed gas producing device, wherein the reversible compressed gas producing device now produces electrical power that is fed back to the integrating device, the electrical power being released through the at least one electrical supply outlet to supply power to an external electrical load, or the electrical power being released back to assist the at least one external electrical source at a time when demand for electricity on the at least one external electrical source is high, and wherein the system is in the energy generation mode when the compressed gas producing device is operating in reverse mode.

3

3. The energy storage and generation system of claim 1 further comprising the compressed gas generating device being an electrolytic device taking in electricity through the integrating device and converting an electrolyte into at least one type of compressed gas by electrolysis.

4

4. The energy storage and generation system of claim 1 further comprising: multiple liquids used separately or together in the system with each liquid having a liquid reservoir connected through the network of pipelines to a respective liquid pump; and the network of pipelines connecting each respective liquid pump to the at least two liquid vessels.

5

5. The energy storage and generation system of claim 4 further comprising, the electrical integrating device is a set of diodes, at least one transistor, at least one switch, or an electronic device.

6

6. The energy storage and generation system of claim 5 further comprising: when the system is in the energy generation mode, the energy producing capability in the form of compressed gas stored in at least one of the at least two liquid vessels is released from that particular liquid vessel to a second liquid vessel containing the liquid; the compressed gas moving the liquid from the second liquid vessel through the at least one hydroturbine generator into a third liquid vessel, the third liquid vessel being empty; the electrical power generated by the at least one hydroturbine generator being fed to the integrating device; the electric power being routed to the electrical power outlet or flowed back to the at least one external electrical power source when demand on the at least one external electrical power source is high.

7

7. The energy storage and generation system of claim 5 further comprising: wherein, when the system is in the energy generation mode, the energy producing capability in the form of compressed gas stored in at least one of the at least two liquid vessels is released from the liquid vessel through the network of pipelines and then through the compressed gas outlet connection to supply compressed gas to power an external device.

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Patent Metadata

Filing Date

December 7, 2016

Publication Date

September 24, 2019

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Cite as: Patentable. “Energy storage and generation system” (US-10422312). https://patentable.app/patents/US-10422312

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